/* 整体页面布局 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
    background-color: #333;
    color: white;
    width: 200px;
    min-height: 100vh;
    padding: 20px;
    box-sizing: border-box;
}

/* 侧边栏标题样式 */
.sidebar h1 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 20px;
}

/* 侧边栏列表样式 */
.sidebar ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.sidebar li {
    margin-bottom: 10px;
}

.sidebar a {
    text-decoration: none;
    color: white;
    display: block;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.sidebar a:hover {
    background-color: #555;
}

/* 主内容区域样式 */
.main-content {
    flex: 1;
    padding: 20px;
}

/* iframe样式 */
iframe {
    width: 100%;
    height: 100%;
    border: none;
}